Coil component

Patent metadata

Field	Value
Publication number	US-11842844-B2
Application number	US-202117166448-A
Country	US
Kind code	B2
Filing date	Feb 3, 2021
Priority date	Feb 7, 2020
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

In a coil 5 of a multilayer coil component 1 , an end portion 6 a of a turn 6 closest to a side surface 2 e in the facing direction of the side surface 2 e and a side surface 2 f is connected to a first external electrode 3 and an end portion 11 a of a turn 11 closest to the side surface 2 f in the facing direction of the pair of side surfaces 2 e and 2 f is connected to a second external electrode 4 . The area at which the turn 6 faces the second external electrode 4 and the area at which the turn 11 faces the first external electrode 3 are smaller than the area at which turns 7, 8, 9, and 10 other than the turn 6 and the turn 11 face the first external electrode 3 or the second external electrode 4.

First claim

What is claimed is:

1. A coil component comprising:
an element body including a pair of end surfaces facing each other, a pair of main surfaces facing each other, and a pair of side surfaces facing each other;
a coil disposed in the element body, having a coil axis extending along a facing direction of the pair of side surfaces, the coil including:
a first outermost turn closest to one of the side surfaces in the facing direction of the pair of side surfaces;
a second outermost turn closest to the other side surface in the facing direction of the pair of side surfaces; and
a plurality of inner turns between the first outermost turn and the second outermost turn;

a first external electrode to which an end portion of the first outermost turn is connected; and
a second external electrode to which an end portion of the second outermost turn is connected, wherein
each of the first external electrode and the second external electrode is disposed on at least one of the main surfaces and the first external electrode and the second external electrode are separated from each other in a facing direction of the pair of end surfaces, and
in a facing direction of the pair of main surfaces, each of the plurality of inner turns overlaps the second electrode more than the first outermost turn overlaps the second electrode, and each of the plurality of inner turns overlaps the first electrode more than the second outermost turn overlaps the first electrode.

2. The coil component according to claim 1 , wherein each of the first external electrode and the second external electrode is disposed only on one of the main surfaces.

3. The coil component according to claim 1 , wherein
the first external electrode includes a first electrode part disposed on one of the end surfaces and a second electrode part disposed on one of the main surfaces and is disposed so as to straddle one of the end surfaces and one of the main surfaces,
the second external electrode includes a third electrode part disposed on the other end surface and a fourth electrode part disposed on one of the main surfaces and is disposed so as to straddle the other end surface and one of the main surfaces, and
in the facing direction of the pair of end surfaces, each of the plurality of inner turns overlaps the first electrode part more than the first outermost turn overlaps the first electrode part, and each of the plurality of inner turns overlaps the third electrode part more than the second outermost turn overlaps the third electrode part.

Assignees

• Tdk Corp

Inventors

• Urabe Junichiro
• Kato Hajime
• Shiga Yuto
• TOBITA Kazuya
• Kazuta Youichi
• Hamachi Noriaki
• Matsuura Toshinori
• Takubo Yuichi
• Takahashi Asami
• Takaku Munehiro

Classifications

• H01F27/292 Primary

  Surface mounted devices · CPC title

• H01F17/0013 Primary

  with stacked layers · CPC title

• H01F27/2847

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title

• H01F2017/0073

  with a special conductive pattern, e.g. flat spiral · CPC title

• H01F5/00 Primary

  Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) · CPC title